Spray unit



FIG. 1 is a front view of the spray unit of the present invention without the cover;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof; and,

FIG. 4 is a perspective view of the spray unit of the present invention showing the cover removed from the body of the spray unit. 

The ornamental design for a spray unit, as shown and described. 